The final precipitation product should have a known,stable chemical composition.One way to obtain a known,stable chemical composition is via____________________ ,which is defined as the strong heating of a precipitate to change the chemical composition of the precipitate to a more stable form.
A)drying
B)ignition
C)charring
D)thermogravimetric analysis
E)annealing

Question

Quizplus · Accepted Answer

Ignition involves strong heating of a precipitate to change its chemical composition to a more stable form. This process ensures a known and stable chemical composition of the final precipitation product. Drying involves only the removal of water or solvent and does not alter the chemical composition of the precipitate. Charring is the partial burning or carbonization of organic substances and is not a suitable method for obtaining a known, stable chemical composition. Thermogravimetric analysis is a method of measuring the change in weight of a substance as it is heated, and annealing is the process of heating a material to a specific temperature and then cooling it slowly to make it less brittle or more ductile.

The Final Precipitation Product Should Have a Known,stable Chemical Composition